Home / 3,391.39-4,679.91-1,899.06

Finding the Fourth Proportional to 3,391.39, 4,679.91 and 1,899.06

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Solution

The fourth proportional to 3,391.39, 4,679.91 and 1,899.06 is: 2,620.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.39 : 4,679.91 = 1,899.06 : x
  2. Step 2: Convert to fraction form
    3,391.39/4,679.91 = 1,899.06/x
  3. Step 3: Cross multiply
    3,391.39x = 4,679.91 × 1,899.06
  4. Step 4: Simplify right side
    3,391.39x = 8,887,429.88
  5. Step 5: Solve for x
    x = 8,887,429.88/3,391.39
  6. Step 6: Final answer
    x = 2,620.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.